Pioneer Energy Services Corp., through its subsidiaries, provides drilling services and production services to oil and gas exploration and production companies in the United States and Colombia. The company’s Drilling Services Segment provides contract land drilling services in Texas, North Dakota, Utah, Appalachia, and Colombia. As of February 1, 2015, this segment operated a fleet of 47 drilling rigs. Its Production Services Segment offers well servicing, wireline services, and coiled tubing services to exploration and production companies in the onshore oil and gas producing regions in the Mid-Continent and Rocky Mountain states; and in the onshore and offshore Gulf Coast. As of February 1, 2015, this segment operated 107 rigs with 550 horsepower and 10 rigs with 600 horsepower; 128 wireline units; and 12 onshore and 5 offshore coiled tubing units. The company was formerly known as Pioneer Drilling Company and changed its name to Pioneer Energy Services Corp. in 2012. Pioneer Energy Services Corp. was founded in 1968 and is headquartered in San Antonio, Texas.